Round|Natural|GIA

0.31ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2504099666

Certificate GIA 2504099666

Diamond specifications and retailer prices

From $373 USD
As of October 31, 2026
Save $577 USD (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,577 USD at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 0.31ct natural round diamond

This 0.31ct natural round sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2504099666. Listed at 17 retailers as of October 31, 2026, with a 155% 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

0.31
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2504099666
Dimensions4.34 × 4.32 × 2.69 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
4.34 mm4.32 mm0.31 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2504099666
Side View
Table 57.0%Crown 36°Girdle: ThickPavilion 40.6°Culet: NoneDepth 62.0%

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 31
Current: $1,577 USD|Low: $373 USD|High: $1,577 USD|Avg: $671 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8$373 USD
Retailer 7$401 USD
Retailer 9$450 USD
Retailer 4$507 USD
Retailer 5$638 USD
Retailer 6$659 USD
Retailer 2$665 USD
Retailer 3$950 USD
NZ Jewellers$1,577 USD

42 data points across 9 retailers

17 retailers$373 USD to $950 USD

Retailer 1
-
$373 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$373 USD
View
A
Retailer 3
-
$388 USD
View
A
Retailer 4
-
$401 USD
View
B+
Retailer 5
-
$490 USD
View
B+
Retailer 6
-
$490 USD
View
Retailer 7
-
$502 USD
View
Price last confirmed 40 days ago
B+
Retailer 8
-
$507 USD
£399 GBP
View
B+
Retailer 9
-
$510 USD
View
B
Retailer 10
-
$628 USD
View
B+
Retailer 11
-
$638 USD
ZAR 10,307 ZAR
View
B
Retailer 12
-
$641 USD
£505 GBP
View
Retailer 13
-
$659 USD
A$1,014 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$665 USD
€633 EUR
View
B
Retailer 15
-
$950 USD
£748 GBP
View
Retailer 16
-
$1,577 USD
View
Price under review
Most Expensive
NZ Jewellers
6fd32f51-2875-4c7b-8302-edf73a30347d · Sep 24
$1,577 USD
View
Price under review
16 more retailers have this diamond
Prices start from $373 USDSave up to $577 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
0.31ct Round
$373 USD