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Round|Lab Grown|IGI

1.05ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • IGI LG474116583

Shape and cutting style on the report: Round brilliant

Certificate IGI LG474116583

Diamond specifications and retailer prices

From $620 USD
As of October 29, 2026
Save $744 USD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,072 USD at Friendly Diamonds · As of October 30, 2026
View at Friendly 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474116583 or 474116583. Listed at 11 retailers as of October 29, 2026, with a 120% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474116583
Dimensions6.58 × 6.54 × 3.91 mm
L/W Ratio1.01
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
6.58 mm6.54 mm1.05 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474116583
Side View
Table 60.0%Crown 32.7°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $2,072 USD|Low: $579 USD|High: $3,348 USD|Avg: $1,267 USD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5$620 USD
Retailer 4$725 USD
Retailer 8$812 USD
Retailer 6$841 USD
Retailer 2$1,342 USD
Retailer 7$1,364 USD
Friendly Diamonds$2,072 USD
Retailer 3$3,308 USD

40 data points across 8 retailers

11 retailers$620 USD to $1,364 USD

B
Cheapest Retailer
-
$620 USD
B
Retailer 2
-
$725 USD
View
B
Retailer 3
-
$789 USD
View
B
Retailer 4
-
$812 USD
View
Final sale: no returns
B
Retailer 5
-
$841 USD
View
Retailer 6
-
$841 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$1,342 USD
£1,057 GBP
View
B
Retailer 8
-
$1,364 USD
View
Most Expensive
Friendly Diamonds
1589662 · Oct 30
$2,072 USD
View
Price under review
8 more retailers have this diamond
Prices start from $620 USDSave up to $744 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.

B
1.05ct Round
$620 USD