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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 $336 NZD
₹18,015 INR
As of October 30, 2026
Save $1,872 NZD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,207 NZD 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 $336 to $2,207, a $1,872 spread on the same certified stone. NZ Jewellers lists it at $2,207. 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: $592 NZD|Low: $336 NZD|High: $1,147 NZD|Avg: $660 NZD|-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$336 NZD
Retailer 2$409 NZD
Retailer 9$476 NZD
Retailer 10$550 NZD
Retailer 8$554 NZD
Retailer 1$592 NZD
Retailer 5$702 NZD
Retailer 3$767 NZD
Retailer 4$796 NZD
Retailer 6$953 NZD
Retailer 7$1,086 NZD

12 data points across 11 retailers

16 retailers$336 NZD to $2,207 NZD

A
Cheapest Retailer
-
$336 NZD
₹18,015 INR
A
Retailer 2
-
$409 NZD
HK$1,800 HKD
View
A
Retailer 3
-
$470 NZD
$265 USD
View
A
Retailer 4
-
$476 NZD
$268 USD
View
Retailer 5
-
$534 NZD
$301 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$550 NZD
$310 USD
View
Retailer 7
-
$554 NZD
$312 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$554 NZD
A$481 AUD
View
A
Retailer 9
-
$592 NZD
£263 GBP
View
A
Retailer 10
-
$656 NZD
$370 USD
View
B+
Retailer 11
-
$702 NZD
$396 USD
View
Retailer 12
-
$767 NZD
ZAR 6,983 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 13
-
$796 NZD
€427 EUR
View
B+
Retailer 14
-
$953 NZD
£423 GBP
View
B
Retailer 15
-
$1,086 NZD
£482 GBP
View
Most Expensive
B
NZ Jewellers
461b3ca3-9f40-4479-821e-e2dd38bfa610 · Oct 26
$2,207 NZD
$1,244 USD
View
15 more retailers have this diamond
Prices start from $336 NZDSave up to $1,872 NZD

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
$336 NZD