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Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2547510952

Certificate GIA 2547510952

Diamond specifications and retailer prices

From £6,571 GBP
$8,804 USD
As of October 31, 2026
Save £5,887 GBP (47%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £12,458 GBP at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2547510952. Listed at 27 retailers as of October 30, 2026, with prices from £6,571 to £12,458, a £5,887 spread on the same certified stone. NZ Jewellers lists it at £12,458. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2547510952
Dimensions7.26 × 7.31 × 4.56 mm
L/W Ratio1.01
Top View
7.26 mm7.31 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2547510952
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £10,981 GBP|Low: £7,201 GBP|High: £11,815 GBP|Avg: £9,096 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 7£7,201 GBP
Retailer 2£8,130 GBP
Retailer 8£8,222 GBP
Retailer 6£8,231 GBP
Retailer 4£8,626 GBP
Retailer 3£9,021 GBP
Retailer 1£10,981 GBP
Retailer 5£11,736 GBP

38 data points across 8 retailers

27 retailers£6,571 GBP to £12,458 GBP

B+
Cheapest Retailer
-
£6,571 GBP
$8,804 USD
B+
Retailer 2
-
£6,802 GBP
$9,114 USD
View
B+
Retailer 3
-
£6,936 GBP
$9,293 USD
View
B+
Retailer 4
-
£7,123 GBP
$9,543 USD
View
B+
Retailer 5
-
£7,197 GBP
CA$13,394 CAD
View
B+
Retailer 6
-
£7,201 GBP
$9,648 USD
View
Final sale: no returns
B+
Retailer 7
-
£7,392 GBP
$9,905 USD
View
B+
Retailer 8
-
£7,474 GBP
$10,015 USD
View
B+
Retailer 9
-
£7,973 GBP
$10,683 USD
View
B+
Retailer 10
-
£8,098 GBP
$10,850 USD
View
B+
Retailer 11
-
£8,130 GBP
View
B+
Retailer 12
-
£8,222 GBP
$11,017 USD
View
Retailer 13
-
£8,231 GBP
A$16,966 AUD
View
Price last confirmed 9 days ago
B+
Retailer 14
-
£8,331 GBP
$11,162 USD
View
B+
Retailer 15
-
£8,626 GBP
View
B+
Retailer 16
-
£8,628 GBP
$11,561 USD
View
B+
Retailer 17
-
£8,762 GBP
$11,740 USD
View
B+
Retailer 18
-
£8,762 GBP
$11,740 USD
View
B+
Retailer 19
-
£9,021 GBP
€11,511 EUR
View
B
Retailer 20
-
£9,053 GBP
$12,130 USD
View
B
Retailer 21
-
£9,098 GBP
$12,190 USD
View
B
Retailer 22
-
£9,343 GBP
$12,519 USD
View
B
Retailer 23
-
£9,580 GBP
$12,836 USD
View
Retailer 24
-
£9,836 GBP
$13,179 USD
View
Price last confirmed 9 days ago
B
Retailer 25
-
£10,981 GBP
ZAR 237,699 ZAR
View
B
Retailer 26
-
£11,736 GBP
View
Most Expensive
B
NZ Jewellers
14b7eaaa-b1aa-4f7f-8bb9-08ca8103b316 · Oct 30
£12,458 GBP
$16,692 USD
View
26 more retailers have this diamond
Prices start from £6,571 GBPSave up to £5,887 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.

B+
1.51ct Round
£6,571 GBP