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Round|Lab Grown|IGI

1.05ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG670428283

Shape and cutting style on the report: Round brilliant

Certificate IGI LG670428283

Diamond specifications and retailer prices

From $147 USD
As of October 26, 2026
Save $877 USD (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $1,024 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG670428283 or 670428283. Listed at 23 retailers as of October 26, 2026, with prices from $147 to $1,024, a $877 spread on the same certified stone. Reve Diamonds lists it at $1,024. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.05
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670428283
Dimensions6.58 × 6.56 × 3.99 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.58 mm6.56 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670428283
Side View
Table 58.0%Crown 33.9°Girdle: MediumPavilion 41°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $650 USD|Low: $141 USD|High: $862 USD|Avg: $397 USD|-13.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 13$147 USD
Retailer 12$164 USD
Retailer 6$170 USD
Retailer 3$182 USD
Retailer 2$248 USD
Retailer 9$313 USD
Retailer 7$347 USD
Retailer 8$362 USD
Retailer 14$410 USD
Retailer 4$428 USD
Retailer 5$586 USD
Retailer 11$619 USD
Retailer 1$650 USD
Retailer 10$853 USD

44 data points across 14 retailers

23 retailers$147 USD to $1,024 USD

A
Cheapest Retailer
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$147 USD
A
Retailer 2
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$164 USD
View
Final sale: no returns
A
Retailer 3
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$170 USD
View
Retailer 4
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$180 USD
View
Price last confirmed 59 days ago
A
Retailer 5
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$182 USD
View
A
Retailer 6
-
$182 USD
View
B+
Retailer 7
-
$248 USD
View
A
Retailer 8
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$295 USD
View
A
Retailer 9
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$313 USD
£246 GBP
View
B+
Retailer 10
-
$347 USD
€330 EUR
View
B+
Retailer 11
-
$362 USD
£285 GBP
View
Retailer 12
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$410 USD
View
Price last confirmed 24 days ago
Retailer 13
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$410 USD
View
Price last confirmed 24 days ago
Retailer 14
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$410 USD
View
Price last confirmed 24 days ago
Retailer 15
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$415 USD
View
Price last confirmed 49 days ago
Retailer 16
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$420 USD
View
Price last confirmed 23 days ago
B+
Retailer 17
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$428 USD
View
B
Retailer 18
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$586 USD
View
B
Retailer 19
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$619 USD
View
B
Retailer 20
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$641 USD
View
B
Retailer 21
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$650 USD
View
B
Retailer 22
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$853 USD
£672 GBP
View
Most Expensive
B
Reve Diamonds
61D252AC6 · Oct 28
$1,024 USD
View
22 more retailers have this diamond
Prices start from $147 USDSave up to $877 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.05ct Round
$147 USD