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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 £1,937 GBP
As of November 6, 2026
Save £2,298 GBP (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £4,235 GBP 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 £1,937 to £4,235, a £2,298 spread on the same certified stone. NZ Jewellers lists it at £4,235. 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

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £4,235 GBP|Low: £1,929 GBP|High: £4,251 GBP|Avg: £2,483 GBP|-0.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 6£1,929 GBP
Retailer 5£1,937 GBP
Retailer 4£2,025 GBP
Retailer 2£2,076 GBP
Retailer 3£2,108 GBP
Retailer 7£2,854 GBP
NZ Jewellers£4,235 GBP

8 data points across 7 retailers

5 retailers£1,937 GBP to £4,235 GBP

A
Cheapest Retailer
-
£1,937 GBP
A
Retailer 2
-
£2,025 GBP
View
A
Retailer 3
-
£2,076 GBP
View
A
Retailer 4
-
£2,108 GBP
View
Most Expensive
B
NZ Jewellers
1b9ce637-3646-4f1a-bb11-cdaa34675d1b · Nov 3
£4,235 GBP
$5,668 USD
View
4 more retailers have this diamond
Prices start from £1,937 GBPSave up to £2,298 GBP

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
£1,937 GBP