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Round|Natural|GIA

1.51ct I VS1 Round Natural Diamond

ID • I/VS1 • GIA 307

Certificate GIA 307

Diamond specifications and retailer prices

From £4,614 GBP
As of November 3, 2026
Save £3,002 GBP (39%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £7,616 GBP at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

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. Listed at 7 retailers as of November 3, 2026, with prices from £4,614 to £7,616, a £3,002 spread on the same certified stone. Helzberg Diamonds lists it at £7,616. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 307
Dimensions7.26 × 7.32 × 4.58 mm
L/W Ratio1.01
Top View
7.26 mm7.32 mm1.51 ctI / VS1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 307
Side View
Table 58.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 62.8%

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 3
Current: £7,616 GBP|Low: £4,614 GBP|High: £7,953 GBP|Avg: £5,948 GBP|-4.2%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 5£4,614 GBP
Retailer 4£4,896 GBP
Retailer 2£4,909 GBP
Retailer 3£4,977 GBP
Retailer 7£5,382 GBP
Retailer 6£5,845 GBP
Retailer 8£6,670 GBP
Retailer 9£7,490 GBP
Helzberg Diamonds£7,616 GBP

31 data points across 9 retailers

7 retailers£4,614 GBP to £7,616 GBP

A
Cheapest Retailer
-
£4,614 GBP
A
Retailer 2
-
£4,896 GBP
View
A
Retailer 3
-
£4,909 GBP
View
A
Retailer 4
-
£4,977 GBP
View
Retailer 5
-
£5,382 GBP
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£5,845 GBP
View
Most Expensive
B+
Helzberg Diamonds
XZRMLMLHOHMPG · Nov 3
£7,616 GBP
$10,281 USD
View
6 more retailers have this diamond
Prices start from £4,614 GBPSave up to £3,002 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
£4,614 GBP