Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1525339860

Certificate GIA 1525339860

Diamond specifications and retailer prices

From £4,944 GBP
$6,625 USD
As of October 30, 2026
Save £5,986 GBP (55%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £10,930 GBP at NZ Jewellers · As of September 14, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 1525339860. Listed at 28 retailers as of October 30, 2026, with a 121% 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

1.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1525339860
Dimensions7.34 × 7.38 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.34 mm7.38 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525339860
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.9%

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: Oct 30
Current: £10,930 GBP|Low: £4,321 GBP|High: £10,930 GBP|Avg: £6,504 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 4£5,117 GBP
Retailer 8£5,185 GBP
Retailer 9£5,465 GBP
Retailer 12£5,465 GBP
Retailer 13£5,921 GBP
Retailer 10£6,012 GBP
Retailer 5£6,019 GBP
Retailer 2£6,049 GBP
Retailer 11£6,606 GBP
Retailer 6£6,793 GBP
Retailer 3£6,831 GBP
Retailer 7£9,156 GBP
NZ Jewellers£10,930 GBP

41 data points across 13 retailers

28 retailers£4,944 GBP to £10,930 GBP

A
Cheapest Retailer
-
£4,944 GBP
$6,625 USD
Retailer 2
-
£5,090 GBP
A$10,493 AUD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£5,117 GBP
$6,856 USD
View
A
Retailer 4
-
£5,185 GBP
$6,947 USD
View
A
Retailer 5
-
£5,250 GBP
$7,034 USD
View
A
Retailer 6
-
£5,465 GBP
$7,322 USD
View
Final sale: no returns
A
Retailer 7
-
£5,465 GBP
$7,323 USD
View
A
Retailer 8
-
£5,822 GBP
$7,800 USD
View
Retailer 9
-
£5,921 GBP
$7,933 USD
View
Price last confirmed 53 days ago
Retailer 10
-
£5,921 GBP
$7,933 USD
View
Price last confirmed 47 days ago
A
Retailer 11
-
£5,921 GBP
$7,933 USD
View
B+
Retailer 12
-
£6,012 GBP
$8,055 USD
View
Retailer 13
-
£6,019 GBP
$8,065 USD
View
Price last confirmed 8 days ago
A
Retailer 14
-
£6,049 GBP
View
B+
Retailer 15
-
£6,049 GBP
$8,105 USD
View
B+
Retailer 16
-
£6,116 GBP
$8,195 USD
View
B+
Retailer 17
-
£6,404 GBP
$8,580 USD
View
B+
Retailer 18
-
£6,404 GBP
$8,580 USD
View
B+
Retailer 19
-
£6,606 GBP
$8,852 USD
View
B+
Retailer 20
-
£6,612 GBP
$8,860 USD
View
B+
Retailer 21
-
£6,793 GBP
€8,668 EUR
View
Retailer 22
-
£6,831 GBP
$9,153 USD
View
Price last confirmed 54 days ago
Retailer 23
-
£6,831 GBP
$9,153 USD
View
Price last confirmed 46 days ago
B+
Retailer 24
-
£6,831 GBP
$9,153 USD
View
B+
Retailer 25
-
£9,156 GBP
View
Retailer 26
-
£10,930 GBP
$14,645 USD
View
Price last confirmed 59 days ago
B
Retailer 27
-
£10,930 GBP
$14,645 USD
View
Most Expensive
NZ Jewellers
56c3b2a2-e2db-4670-8242-ef152f7bc2de · Sep 14
£10,930 GBP
$14,645 USD
View
Price last confirmed 47 days ago
27 more retailers have this diamond
Prices start from £4,944 GBPSave up to £5,986 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 Round
£4,944 GBP