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Round|Lab Grown|IGI

1.05ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG685511561

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685511561

Diamond specifications and retailer prices

From $148 USD
As of October 29, 2026
Save $880 USD (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,028 USD at Reve Diamonds · As of October 30, 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 LG685511561 or 685511561. Listed at 18 retailers as of October 29, 2026, with prices from $148 to $1,028, a $880 spread on the same certified stone. Reve Diamonds lists it at $1,028. 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 angle34.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685511561
Dimensions6.48 × 6.51 × 4.02 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.48 mm6.51 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685511561
Side View
Table 57.0%Crown 34.8°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
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 29
Current: $660 USD|Low: $141 USD|High: $1,028 USD|Avg: $420 USD|-21.4%
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
Retailer 15
Reve Diamonds
October 30, 2026
Retailer 6$148 USD
Retailer 4$165 USD
Retailer 12$172 USD
Retailer 2$184 USD
Retailer 14$184 USD
Retailer 9$317 USD
Retailer 15$339 USD
Retailer 10$360 USD
Retailer 8$364 USD
Retailer 13$429 USD
Retailer 3$496 USD
Retailer 7$590 USD
Retailer 5$646 USD
Retailer 1$660 USD
Retailer 11$860 USD
Reve Diamonds$1,028 USD

37 data points across 16 retailers

18 retailers$148 USD to $1,028 USD

A
Cheapest Retailer
-
$148 USD
A
Retailer 2
-
$165 USD
View
Final sale: no returns
A
Retailer 3
-
$172 USD
View
A
Retailer 4
-
$184 USD
View
A
Retailer 5
-
$184 USD
View
A
Retailer 6
-
$295 USD
View
A
Retailer 7
-
$317 USD
£250 GBP
View
B+
Retailer 8
-
$339 USD
View
B+
Retailer 9
-
$360 USD
€343 EUR
View
B+
Retailer 10
-
$364 USD
£287 GBP
View
B+
Retailer 11
-
$429 USD
View
B+
Retailer 12
-
$496 USD
View
Retailer 13
-
$586 USD
View
Price last confirmed 40 days ago
B
Retailer 14
-
$590 USD
View
B
Retailer 15
-
$646 USD
View
B
Retailer 16
-
$660 USD
View
B
Retailer 17
-
$860 USD
£677 GBP
View
Most Expensive
B
Reve Diamonds
C52929FD7 · Oct 30
$1,028 USD
View
17 more retailers have this diamond
Prices start from $148 USDSave up to $880 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
$148 USD