Round|Natural|GIA

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6551243520

Certificate GIA 6551243520

Diamond specifications and retailer prices

From $270 CAD
₹18,396 INR
As of October 30, 2026
Save $605 CAD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,872 CAD 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 October 29, 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
Color
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: Oct 30
Current: $645 CAD|Low: $270 CAD|High: $940 CAD|Avg: $513 CAD|-6.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 5$270 CAD
Retailer 4$322 CAD
Retailer 2$356 CAD
Retailer 3$405 CAD
Retailer 12$446 CAD
Retailer 11$447 CAD
Retailer 8$474 CAD
Retailer 7$558 CAD
Retailer 10$561 CAD
Retailer 6$584 CAD
Retailer 1$645 CAD
Retailer 9$875 CAD

25 data points across 12 retailers

17 retailers$270 CAD to $875 CAD

A
Cheapest Retailer
-
$270 CAD
₹18,396 INR
A
Retailer 2
-
$322 CAD
HK$1,800 HKD
View
A
Retailer 3
-
$356 CAD
$255 USD
View
A
Retailer 4
-
$405 CAD
SGD 392 SGD
View
Retailer 5
-
$409 CAD
$293 USD
View
Price last confirmed 30 days ago
A
Retailer 6
-
$446 CAD
$319 USD
View
A
Retailer 7
-
$447 CAD
A$492 AUD
View
Retailer 8
-
$461 CAD
$330 USD
View
Price last confirmed 31 days ago
A
Retailer 9
-
$474 CAD
£267 GBP
View
Retailer 10
-
$556 CAD
$398 USD
View
Price last confirmed 31 days ago
B+
Retailer 11
-
$558 CAD
$400 USD
View
B+
Retailer 12
-
$561 CAD
$401 USD
View
B+
Retailer 13
-
$584 CAD
ZAR 6,750 ZAR
View
B+
Retailer 14
-
$645 CAD
€440 EUR
View
Retailer 15
-
$657 CAD
A$723 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
$875 CAD
£493 GBP
View
Most Expensive
NZ Jewellers
0c574757-2d77-4f02-acfd-fd6a4f526da0 · Sep 28
$1,872 CAD
$1,340 USD
View
Price under review
16 more retailers have this diamond
Prices start from $270 CADSave up to $605 CAD

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
$270 CAD