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Round|Natural|GIA

1.51ct D I1 Round Natural Diamond

EX • D/I1 • GIA 7518524363

Certificate GIA 7518524363

Diamond specifications and retailer prices

From £5,653 GBP
$7,574 USD
As of October 31, 2026
Save £652 GBP (10%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £6,305 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

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 I1 clarity (included), with a top-tier cut grade and certified by GIA 7518524363. Listed at 5 retailers as of October 31, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7518524363
Dimensions7.37 × 7.43 × 4.51 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Girdle conditionFaceted
Cert comments
Pinpoints are not shown.
Key to symbols
Feather, Crystal, Cavity, Needle
Top View
7.37 mm7.43 mm1.51 ctD / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7518524363
Side View
Table 57.0%Crown 35.5°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 60.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
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Price History

Last verified: Oct 31
Current: £5,653 GBP|Low: £2,914 GBP|High: £6,305 GBP|Avg: £3,820 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
The Diamond Guys
October 29, 2026
Retailer 7£2,914 GBP
Retailer 3£3,216 GBP
Retailer 9£3,417 GBP
Retailer 4£3,641 GBP
Retailer 5£3,890 GBP
Retailer 6£3,918 GBP
Retailer 2£4,417 GBP
Retailer 8£4,663 GBP
Retailer 1£5,653 GBP
The Diamond Guys£6,305 GBP

8 data points across 10 retailers

5 retailers£5,653 GBP to £6,305 GBP

Retailer 1
-
£2,914 GBP
HK$30,500 HKD
Price last confirmed 58 days ago
Retailer 2
-
£3,918 GBP
$5,250 USD
View
Price last confirmed 28 days ago
Retailer 3
-
£4,521 GBP
$6,058 USD
View
Price last confirmed 28 days ago
B
Retailer 4
-
£5,653 GBP
$7,574 USD
View
Most Expensive
B
The Diamond Guys
1997299260 · Nov 1
£6,305 GBP
$8,448 USD
View
4 more retailers have this diamond
Prices start from £5,653 GBPSave up to £652 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
£5,653 GBP