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Round|Natural|GIA

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566380050

Certificate GIA 2566380050

Diamond specifications and retailer prices

From $242 SGD
₹18,015 INR
As of October 30, 2026
Save $1,349 SGD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,590 SGD at NZ Jewellers · As of October 26, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566380050. Listed at 16 retailers as of October 26, 2026, with prices from $242 to $1,590, a $1,349 spread on the same certified stone. NZ Jewellers lists it at $1,590. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566380050
Dimensions4.35 × 4.36 × 2.70 mm
L/W Ratio1.00
Key to symbols
Crystal
Top View
4.35 mm4.36 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566380050
Side View
Table 57.0%Crown 35.5°Girdle: NUL-NULPavilion 40.8°Culet: NoneDepth 61.9%

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: $427 SGD|Low: $242 SGD|High: $826 SGD|Avg: $476 SGD|-29.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 11$242 SGD
Retailer 2$295 SGD
Retailer 9$343 SGD
Retailer 10$396 SGD
Retailer 8$399 SGD
Retailer 1$427 SGD
Retailer 5$506 SGD
Retailer 3$553 SGD
Retailer 4$573 SGD
Retailer 6$686 SGD
Retailer 7$783 SGD

12 data points across 11 retailers

16 retailers$242 SGD to $1,590 SGD

A
Cheapest Retailer
-
$242 SGD
₹18,015 INR
A
Retailer 2
-
$295 SGD
HK$1,800 HKD
View
A
Retailer 3
-
$339 SGD
$265 USD
View
A
Retailer 4
-
$343 SGD
$268 USD
View
Retailer 5
-
$385 SGD
$301 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$396 SGD
$310 USD
View
Retailer 7
-
$399 SGD
$312 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$399 SGD
A$481 AUD
View
A
Retailer 9
-
$427 SGD
£263 GBP
View
A
Retailer 10
-
$473 SGD
$370 USD
View
B+
Retailer 11
-
$506 SGD
$396 USD
View
Retailer 12
-
$553 SGD
ZAR 6,983 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 13
-
$573 SGD
€427 EUR
View
B+
Retailer 14
-
$686 SGD
£423 GBP
View
B
Retailer 15
-
$783 SGD
£482 GBP
View
Most Expensive
B
NZ Jewellers
461b3ca3-9f40-4479-821e-e2dd38bfa610 · Oct 26
$1,590 SGD
$1,244 USD
View
15 more retailers have this diamond
Prices start from $242 SGDSave up to $1,349 SGD

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
$242 SGD