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Round|Natural|GIA

1.51ct H VS1 Round Natural Diamond

VG • H/VS1 • GIA 6481921061

Certificate GIA 6481921061

Diamond specifications and retailer prices

From £4,143 GBP
As of November 4, 2026
Save £5,156 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £9,299 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by GIA 6481921061. Listed at 19 retailers as of November 4, 2026, with prices from £4,143 to £9,299, a £5,156 spread on the same certified stone. Diamond Quarter lists it at £9,299. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 6481921061
Dimensions7.14 × 7.09 × 4.60 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.14 mm7.09 mm1.51 ctH / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6481921061
Side View
Table 57.0%Crown 38°Girdle: ThickPavilion 40.2°Culet: NoneDepth 64.6%

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 4
Current: £5,225 GBP|Low: £4,143 GBP|High: £9,425 GBP|Avg: £5,505 GBP|-8.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
Retailer 18
November 6, 2026
Retailer 5£4,143 GBP
Retailer 4£4,157 GBP
Retailer 6£4,385 GBP
Retailer 15£4,417 GBP
Retailer 7£4,720 GBP
Retailer 10£4,740 GBP
Retailer 2£4,751 GBP
Retailer 3£4,751 GBP
Retailer 18£4,751 GBP
Retailer 11£4,946 GBP
Retailer 1£5,225 GBP
Retailer 8£5,433 GBP
Retailer 17£5,481 GBP
Retailer 13£5,697 GBP
Retailer 9£6,210 GBP
Retailer 12£6,398 GBP
Retailer 14£7,725 GBP
Retailer 16£8,770 GBP

30 data points across 18 retailers

19 retailers£4,143 GBP to £9,299 GBP

A
Cheapest Retailer
-
£4,143 GBP
A
Retailer 2
-
£4,157 GBP
View
A
Retailer 3
-
£4,385 GBP
View
Final sale: no returns
A
Retailer 4
-
£4,417 GBP
View
A
Retailer 5
-
£4,720 GBP
View
A
Retailer 6
-
£4,740 GBP
View
A
Retailer 7
-
£4,751 GBP
View
Retailer 8
-
£4,751 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£4,751 GBP
View
A
Retailer 10
-
£4,946 GBP
View
A
Retailer 11
-
£5,225 GBP
View
Retailer 12
-
£5,433 GBP
View
Price last confirmed 15 days ago
B+
Retailer 13
-
£5,481 GBP
View
B+
Retailer 14
-
£5,697 GBP
View
Retailer 15
-
£6,210 GBP
View
Price last confirmed 23 days ago
B+
Retailer 16
-
£6,398 GBP
View
B
Retailer 17
-
£7,725 GBP
View
B
Retailer 18
-
£8,770 GBP
View
Most Expensive
B
Diamond Quarter
1.51VS1H64616B31N · Nov 5
£9,299 GBP
View
18 more retailers have this diamond
Prices start from £4,143 GBPSave up to £5,156 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
£4,143 GBP