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Radiant|Natural|GIA

1.31ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 7551497552

Certificate GIA 7551497552

Diamond specifications and retailer prices

From $3,830 NZD
As of November 6, 2026
Save $2,731 NZD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,829 NZD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.31ct natural radiant diamond

This 1.31ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551497552. Listed at 10 retailers as of November 2, 2026, with a 71% 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

1.31
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551497552
Dimensions7.21 × 5.31 × 3.75 mm
L/W Ratio1.36
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Pinpoint
Top View
7.21 mm5.31 mm1.31 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551497552
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 70.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,068 NZD|Low: $3,745 NZD|High: $6,640 NZD|Avg: $4,800 NZD|+1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 5$3,745 NZD
Retailer 2$3,830 NZD
Retailer 1$4,068 NZD
Retailer 3$5,087 NZD
Retailer 4$6,561 NZD

41 data points across 5 retailers

10 retailers$3,830 NZD to $6,561 NZD

Retailer 1
-
$3,745 NZD
Price last confirmed 30 days ago
Retailer 2
-
$3,745 NZD
View
Price last confirmed 30 days ago
Retailer 3
-
$3,745 NZD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$3,830 NZD
View
Retailer 5
-
$3,918 NZD
View
Price last confirmed 38 days ago
A
Retailer 6
-
$4,068 NZD
View
Retailer 7
-
$4,322 NZD
View
Price last confirmed 39 days ago
A
Retailer 8
-
$5,087 NZD
View
B+
Retailer 9
-
$6,561 NZD
View
Most Expensive
NZ Jewellers
30c1e1ec-4b8e-4a8d-a852-c29f55ab6974 · Sep 29
$7,829 NZD
$4,340 USD
View
Price last confirmed 38 days ago
9 more retailers have this diamond
Prices start from $3,830 NZDSave up to $2,731 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
1.31ct Radiant
$3,830 NZD