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Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 6522388830

Certificate GIA 6522388830

Diamond specifications and retailer prices

From $4,676 NZD
As of November 6, 2026
Save $5,549 NZD (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $10,225 NZD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two 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 6522388830. Listed at 5 retailers as of November 3, 2026, with prices from $4,676 to $10,225, a $5,549 spread on the same certified stone. NZ Jewellers lists it at $10,225. 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

1.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.72°
Pavilion angle30.24°
OriginNatural
Grading LabGIA
CertificateGIA 6522388830
Dimensions7.74 × 5.75 × 3.73 mm
L/W Ratio1.35
Top View
7.74 mm5.75 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6522388830
Side View
Table 70.0%Crown 43.72°Girdle: STK-THKPavilion 30.24°Culet: NoneDepth 64.8%

Caratlytics Score

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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: $10,225 NZD|Low: $4,658 NZD|High: $10,264 NZD|Avg: $5,995 NZD|-0.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 6$4,658 NZD
Retailer 5$4,676 NZD
Retailer 4$4,890 NZD
Retailer 2$5,013 NZD
Retailer 3$5,091 NZD
Retailer 7$6,891 NZD
NZ Jewellers$10,225 NZD

8 data points across 7 retailers

5 retailers$4,676 NZD to $10,225 NZD

A
Cheapest Retailer
-
$4,676 NZD
A
Retailer 2
-
$4,890 NZD
View
A
Retailer 3
-
$5,013 NZD
View
A
Retailer 4
-
$5,091 NZD
View
Most Expensive
B
NZ Jewellers
1b9ce637-3646-4f1a-bb11-cdaa34675d1b · Nov 3
$10,225 NZD
$5,668 USD
View
4 more retailers have this diamond
Prices start from $4,676 NZDSave up to $5,549 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
1.51ct Radiant
$4,676 NZD