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0.31ct G SI2 Round Lab Grown Diamond

EX • G/SI2 • GIA 1188631626

Certificate GIA 1188631626

Diamond specifications and retailer prices

From $256 USD
₹24,411 INR
As of October 31, 2026
Save $200 USD (44%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $456 USD at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round sits in the sub-half-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1188631626. Listed at 2 retailers as of October 31, 2026, with prices from $256 to $456, a $200 spread on the same certified stone. 77 Diamonds lists it at $456. 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

0.31
Carat
G
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 1188631626
Dimensions4.37 × 4.36 × 2.71 mm
L/W Ratio1.00
Top View
4.37 mm4.36 mm0.31 ctG / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1188631626
Side View
Table 55.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $456 USD|Low: $256 USD|High: $538 USD|Avg: $506 USD
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 2$256 USD
77 Diamonds$456 USD
Retailer 3$532 USD
Retailer 4$536 USD

9 data points across 4 retailers

2 retailers$256 USD to $456 USD

B+
Cheapest Retailer
-
$256 USD
₹24,411 INR
Most Expensive
B
77 Diamonds
RBPUIFSD5JVJ7UV · Oct 31
$456 USD
£359 GBP
View
1 more retailer has this diamond
Prices start from $256 USDSave up to $200 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+
0.31ct Round
$256 USD