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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 HK$1,484 HKD
₹18,015 INR
As of October 30, 2026
Save HK$3,319 HKD (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$9,760 HKD 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 30, 2026, with a 224% 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
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: HK$4,213 HKD|Low: HK$1,484 HKD|High: HK$5,072 HKD|Avg: HK$2,919 HKD|-5.1%
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 11HK$1,484 HKD
Retailer 2HK$1,808 HKD
Retailer 9HK$2,103 HKD
Retailer 10HK$2,432 HKD
Retailer 8HK$2,451 HKD
Retailer 4HK$2,620 HKD
Retailer 6HK$3,106 HKD
Retailer 3HK$3,391 HKD
Retailer 5HK$3,518 HKD
Retailer 1HK$4,213 HKD
Retailer 7HK$4,803 HKD

12 data points across 11 retailers

16 retailersHK$1,484 HKD to HK$4,803 HKD

A
Cheapest Retailer
-
HK$1,484 HKD
₹18,015 INR
A
Retailer 2
-
HK$1,808 HKD
View
A
Retailer 3
-
HK$2,079 HKD
$265 USD
View
A
Retailer 4
-
HK$2,103 HKD
$268 USD
View
Retailer 5
-
HK$2,362 HKD
$301 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
HK$2,432 HKD
$310 USD
View
Retailer 7
-
HK$2,448 HKD
$312 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
HK$2,451 HKD
A$481 AUD
View
A
Retailer 9
-
HK$2,620 HKD
£263 GBP
View
A
Retailer 10
-
HK$2,903 HKD
$370 USD
View
B+
Retailer 11
-
HK$3,106 HKD
$396 USD
View
Retailer 12
-
HK$3,391 HKD
ZAR 6,983 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 13
-
HK$3,518 HKD
€427 EUR
View
B+
Retailer 14
-
HK$4,213 HKD
£423 GBP
View
B
Retailer 15
-
HK$4,803 HKD
£482 GBP
View
Most Expensive
NZ Jewellers
461b3ca3-9f40-4479-821e-e2dd38bfa610 · Oct 26
HK$9,760 HKD
$1,244 USD
View
Price under review
15 more retailers have this diamond
Prices start from HK$1,484 HKDSave up to HK$3,319 HKD

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
HK$1,484 HKD