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Round|Natural|GIA

1.51ct I VS1 Round Natural Diamond

EX • I/VS1 • GIA 1568204178

Certificate GIA 1568204178

Diamond specifications and retailer prices

From £4,145 GBP
As of November 1, 2026
Save £3,001 GBP (42%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £7,666 GBP at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 1568204178. Listed at 9 retailers as of November 1, 2026, with a 72% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1568204178
Dimensions7.29 × 4.54 × 4.54 mm
L/W Ratio1.61
Culet sizeNone
Top View
7.29 mm4.54 mm1.51 ctI / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1568204178
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.0%

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: Nov 1
Current: £4,659 GBP|Low: £4,145 GBP|High: £7,969 GBP|Avg: £5,418 GBP|-6.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 2, 2026
Retailer 5£4,145 GBP
Retailer 7£4,193 GBP
Retailer 8£4,316 GBP
Retailer 6£4,488 GBP
Retailer 1£4,659 GBP
Retailer 9£5,222 GBP
Retailer 3£5,266 GBP
Retailer 4£5,878 GBP
Retailer 2£6,045 GBP
Retailer 10£7,146 GBP
Wholesale Diamonds Direct£7,666 GBP

30 data points across 11 retailers

9 retailers£4,145 GBP to £7,146 GBP

A
Cheapest Retailer
-
£4,145 GBP
A
Retailer 2
-
£4,193 GBP
View
A
Retailer 3
-
£4,488 GBP
View
A
Retailer 4
-
£4,659 GBP
View
A
Retailer 5
-
£5,222 GBP
View
A
Retailer 6
-
£5,266 GBP
View
B+
Retailer 7
-
£5,878 GBP
View
B
Retailer 8
-
£7,146 GBP
View
Most Expensive
Wholesale Diamonds Direct
592943226 · Oct 23
£7,666 GBP
$10,350 USD
View
Price last confirmed 13 days ago
8 more retailers have this diamond
Prices start from £4,145 GBPSave up to £3,001 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
£4,145 GBP