CaratHunter
Plans
Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 5241026924

Certificate GIA 5241026924

Diamond specifications and retailer prices

From £6,237 GBP
$8,357 USD
As of October 30, 2026
Save £5,202 GBP (45%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £11,439 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 5241026924. Listed at 21 retailers as of October 30, 2026, with prices from £6,237 to £11,439, a £5,202 spread on the same certified stone. NZ Jewellers lists it at £11,439. 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
FluorescenceMedium
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5241026924
Dimensions7.28 × 7.32 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.28 mm7.32 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5241026924
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

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: £11,439 GBP|Low: £6,237 GBP|High: £11,439 GBP|Avg: £8,309 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 3£6,237 GBP
Retailer 8£6,292 GBP
Retailer 9£6,601 GBP
Retailer 5£7,457 GBP
Retailer 7£7,546 GBP
Retailer 10£7,550 GBP
Retailer 11£7,636 GBP
Retailer 2£8,210 GBP
Retailer 6£10,083 GBP
Retailer 4£10,719 GBP
NZ Jewellers£11,439 GBP

43 data points across 11 retailers

21 retailers£6,237 GBP to £11,439 GBP

A
Cheapest Retailer
-
£6,237 GBP
$8,357 USD
Retailer 2
-
£6,292 GBP
$8,430 USD
View
B+
Retailer 3
-
£6,601 GBP
$8,844 USD
View
Final sale: no returns
B+
Retailer 4
-
£6,627 GBP
$8,880 USD
View
B+
Retailer 5
-
£6,653 GBP
CA$12,380 CAD
View
B+
Retailer 6
-
£7,435 GBP
$9,962 USD
View
B+
Retailer 7
-
£7,457 GBP
View
Retailer 8
-
£7,546 GBP
A$15,556 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£7,550 GBP
$10,116 USD
View
B+
Retailer 10
-
£7,636 GBP
$10,232 USD
View
B
Retailer 11
-
£7,909 GBP
$10,597 USD
View
B+
Retailer 12
-
£8,083 GBP
$10,830 USD
View
B+
Retailer 13
-
£8,083 GBP
$10,830 USD
View
B+
Retailer 14
-
£8,210 GBP
€10,477 EUR
View
B+
Retailer 15
-
£8,351 GBP
$11,190 USD
View
B+
Retailer 16
-
£8,579 GBP
$11,495 USD
View
B
Retailer 17
-
£8,782 GBP
$11,767 USD
View
Retailer 18
-
£9,033 GBP
$12,103 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
£10,083 GBP
ZAR 218,251 ZAR
View
B
Retailer 20
-
£10,719 GBP
View
Most Expensive
B
NZ Jewellers
cbbe9cfe-acaf-44be-8157-92f430013637 · Oct 30
£11,439 GBP
$15,327 USD
View
20 more retailers have this diamond
Prices start from £6,237 GBPSave up to £5,202 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
£6,237 GBP