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Radiant|Natural|GIA

1.51ct D SI2 Radiant Natural Diamond

ID • D/SI2 • GIA 1565108785

Certificate GIA 1565108785

Diamond specifications and retailer prices

From £3,174 GBP
As of October 30, 2026
Save £2,677 GBP (46%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £5,850 GBP at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1565108785. Listed at 6 retailers as of October 30, 2026, with prices from £3,174 to £5,850, a £2,677 spread on the same certified stone. NZ Jewellers lists it at £5,850. 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
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle52.28°
Pavilion angle35.08°
OriginNatural
Grading LabGIA
CertificateGIA 1565108785
Dimensions7.68 × 5.71 × 3.76 mm
L/W Ratio1.35
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Indented Natural, Needle, Natural
Top View
7.68 mm5.71 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1565108785
Side View
Table 73.0%Crown 52.28°Girdle: THI-POLPavilion 35.08°Culet: NoneDepth 65.9%

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: £5,850 GBP|Low: £3,163 GBP|High: £6,086 GBP|Avg: £4,205 GBP|-3.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 2£3,174 GBP
Retailer 4£3,344 GBP
Retailer 5£3,358 GBP
Retailer 6£3,358 GBP
Retailer 3£5,377 GBP
NZ Jewellers£5,850 GBP

30 data points across 6 retailers

6 retailers£3,174 GBP to £5,850 GBP

A
Cheapest Retailer
-
£3,174 GBP
A
Retailer 2
-
£3,344 GBP
$4,480 USD
View
A
Retailer 3
-
£3,358 GBP
$4,499 USD
View
A
Retailer 4
-
£3,358 GBP
$4,499 USD
View
B+
Retailer 5
-
£5,377 GBP
View
Most Expensive
B+
NZ Jewellers
ed1fcc82-bf66-4e54-bc01-dde04d15958a · Oct 30
£5,850 GBP
$7,839 USD
View
5 more retailers have this diamond
Prices start from £3,174 GBPSave up to £2,677 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
£3,174 GBP