Radiant|Lab Grown|IGI

1.25ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG837639115

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG837639115

Diamond specifications and retailer prices

From $181 USD
As of October 30, 2026
Save $639 USD (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $820 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.25ct lab-grown radiant diamond

This 1.25ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG837639115 or 837639115. Listed at 9 retailers as of October 30, 2026, with prices from $181 to $820, a $639 spread on the same certified stone. Brilliant Earth lists it at $820. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837639115
Dimensions7.60 × 5.17 × 3.54 mm
L/W Ratio1.47
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.60 mm5.17 mm1.25 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837639115
Side View
Table 66.0%Crown 45.6°Girdle: MediumPavilion 35°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $820 USD|Low: $172 USD|High: $1,050 USD|Avg: $702 USD|-15.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$172 USD
Retailer 2$300 USD
Retailer 7$377 USD
Retailer 3$547 USD
Retailer 4$762 USD
Retailer 5$778 USD
Brilliant Earth$820 USD
Retailer 9$901 USD
Retailer 8$1,050 USD

10 data points across 9 retailers

9 retailers$181 USD to $820 USD

Retailer 1
-
$172 USD
Price last confirmed 31 days ago
A
Retailer 2
-
$181 USD
View
A
Retailer 3
-
$300 USD
£236 GBP
View
B+
Retailer 4
-
$547 USD
A$842 AUD
View
B+
Retailer 5
-
$700 USD
View
Retailer 6
-
$714 USD
View
Price last confirmed 33 days ago
B
Retailer 7
-
$762 USD
View
B
Retailer 8
-
$778 USD
View
Most Expensive
B
Brilliant Earth
21478386A · Nov 2
$820 USD
View
8 more retailers have this diamond
Prices start from $181 USDSave up to $639 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
1.25ct Radiant
$181 USD