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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 6541094309

Certificate GIA 6541094309

Diamond specifications and retailer prices

From £2,188 GBP
HK$22,900 HKD
As of October 31, 2026
Save £2,984 GBP (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,171 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6541094309. Listed at 20 retailers as of October 30, 2026, with prices from £2,188 to £5,171, a £2,984 spread on the same certified stone. NZ Jewellers lists it at £5,171. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle36.5°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 6541094309
Dimensions7.12 × 7.21 × 4.51 mm
L/W Ratio1.01
Top View
7.12 mm7.21 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6541094309
Side View
Table 59.0%Crown 36.5°Girdle: STK-THKPavilion 40°Culet: NoneDepth 62.9%

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 31
Current: £3,648 GBP|Low: £2,169 GBP|High: £5,024 GBP|Avg: £3,207 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 5£2,188 GBP
Retailer 8£2,523 GBP
Retailer 11£2,726 GBP
Retailer 12£2,740 GBP
Retailer 6£2,839 GBP
Retailer 4£2,968 GBP
Retailer 2£3,182 GBP
Retailer 7£3,360 GBP
Retailer 9£3,398 GBP
Retailer 3£3,588 GBP
Retailer 1£3,648 GBP
Retailer 10£4,990 GBP

42 data points across 12 retailers

20 retailers£2,188 GBP to £5,171 GBP

A
Cheapest Retailer
-
£2,188 GBP
HK$22,900 HKD
A
Retailer 2
-
£2,523 GBP
$3,381 USD
View
B+
Retailer 3
-
£2,612 GBP
$3,500 USD
View
B+
Retailer 4
-
£2,726 GBP
SGD 4,935 SGD
View
B+
Retailer 5
-
£2,740 GBP
$3,671 USD
View
Final sale: no returns
B+
Retailer 6
-
£2,755 GBP
SGD 4,988 SGD
View
B+
Retailer 7
-
£2,839 GBP
View
B+
Retailer 8
-
£2,879 GBP
$3,858 USD
View
B+
Retailer 9
-
£2,968 GBP
$3,977 USD
View
B+
Retailer 10
-
£2,968 GBP
$3,977 USD
View
B+
Retailer 11
-
£2,970 GBP
$3,980 USD
View
Retailer 12
-
£3,182 GBP
A$6,560 AUD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
£3,360 GBP
€4,288 EUR
View
B
Retailer 14
-
£3,398 GBP
View
B
Retailer 15
-
£3,425 GBP
$4,589 USD
View
Retailer 16
-
£3,588 GBP
View
Price last confirmed 32 days ago
B
Retailer 17
-
£3,648 GBP
ZAR 78,971 ZAR
View
B
Retailer 18
-
£4,197 GBP
$5,623 USD
View
B
Retailer 19
-
£4,990 GBP
View
Most Expensive
C
NZ Jewellers
a3e18db9-7fba-4524-aeeb-cbfa87a87723 · Oct 30
£5,171 GBP
$6,929 USD
View
19 more retailers have this diamond
Prices start from £2,188 GBPSave up to £2,984 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
£2,188 GBP