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Round|Natural|GIA

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6551243520

Certificate GIA 6551243520

Diamond specifications and retailer prices

From HK$1,502 HKD
₹18,233 INR
As of November 1, 2026
Save HK$3,321 HKD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$10,513 HKD at NZ Jewellers · As of September 28, 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 6551243520. Listed at 17 retailers as of November 1, 2026, with a 221% 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6551243520
Dimensions4.33 × 4.32 × 2.70 mm
L/W Ratio1.00
Key to symbols
Crystal, Feather
Top View
4.33 mm4.32 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551243520
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NDepth 62.5%

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: Nov 1
Current: HK$2,630 HKD|Low: HK$1,502 HKD|High: HK$5,211 HKD|Avg: HK$2,856 HKD|-4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6HK$1,502 HKD
Retailer 4HK$1,808 HKD
Retailer 2HK$2,001 HKD
Retailer 3HK$2,276 HKD
Retailer 10HK$2,495 HKD
Retailer 9HK$2,502 HKD
Retailer 1HK$2,630 HKD
Retailer 7HK$3,111 HKD
Retailer 11HK$3,116 HKD
Retailer 12HK$3,278 HKD
Retailer 5HK$3,616 HKD
Retailer 8HK$4,823 HKD

24 data points across 12 retailers

17 retailersHK$1,502 HKD to HK$4,823 HKD

A
Cheapest Retailer
-
HK$1,502 HKD
₹18,233 INR
A
Retailer 2
-
HK$1,808 HKD
View
A
Retailer 3
-
HK$2,001 HKD
$255 USD
View
A
Retailer 4
-
HK$2,276 HKD
SGD 392 SGD
View
Retailer 5
-
HK$2,299 HKD
$293 USD
View
Price last confirmed 32 days ago
A
Retailer 6
-
HK$2,495 HKD
$318 USD
View
A
Retailer 7
-
HK$2,502 HKD
A$491 AUD
View
Retailer 8
-
HK$2,589 HKD
$330 USD
View
Price last confirmed 33 days ago
A
Retailer 9
-
HK$2,630 HKD
£264 GBP
View
B+
Retailer 10
-
HK$3,111 HKD
$397 USD
View
B+
Retailer 11
-
HK$3,116 HKD
$397 USD
View
Retailer 12
-
HK$3,123 HKD
$398 USD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
HK$3,278 HKD
ZAR 6,750 ZAR
View
B+
Retailer 14
-
HK$3,616 HKD
€439 EUR
View
Retailer 15
-
HK$3,687 HKD
A$723 AUD
View
Price last confirmed 29 days ago
B
Retailer 16
-
HK$4,823 HKD
£484 GBP
View
Most Expensive
NZ Jewellers
0c574757-2d77-4f02-acfd-fd6a4f526da0 · Sep 28
HK$10,513 HKD
$1,340 USD
View
Price under review
16 more retailers have this diamond
Prices start from HK$1,502 HKDSave up to HK$3,321 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$1,502 HKD