Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 7513772206

Certificate GIA 7513772206

Diamond specifications and retailer prices

From £3,544 GBP
HK$37,100 HKD
As of October 30, 2026
Save £3,813 GBP (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £8,684 GBP at NZ Jewellers · As of September 28, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7513772206. Listed at 19 retailers as of October 29, 2026, with a 108% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7513772206
Dimensions7.32 × 7.27 × 4.59 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.32 mm7.27 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7513772206
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.1%

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 30
Current: £5,428 GBP|Low: £3,544 GBP|High: £7,630 GBP|Avg: £4,935 GBP|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 13£3,544 GBP
Retailer 11£4,003 GBP
Retailer 5£4,207 GBP
Retailer 10£4,324 GBP
Retailer 7£4,332 GBP
Retailer 4£4,426 GBP
Retailer 12£4,463 GBP
Retailer 14£4,487 GBP
Retailer 9£4,585 GBP
Retailer 8£4,733 GBP
Retailer 6£5,092 GBP
Retailer 1£5,428 GBP
Retailer 3£6,231 GBP
Retailer 2£7,357 GBP

31 data points across 14 retailers

19 retailers£3,544 GBP to £7,357 GBP

A
Cheapest Retailer
-
£3,544 GBP
HK$37,100 HKD
A
Retailer 2
-
£4,003 GBP
₹510,787 INR
View
Retailer 3
-
£4,207 GBP
SGD 7,618 SGD
View
Price last confirmed 19 days ago
A
Retailer 4
-
£4,324 GBP
A$8,913 AUD
View
A
Retailer 5
-
£4,332 GBP
$5,805 USD
View
Retailer 6
-
£4,426 GBP
$5,930 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
£4,463 GBP
$5,980 USD
View
A
Retailer 8
-
£4,487 GBP
SGD 8,124 SGD
View
A
Retailer 9
-
£4,585 GBP
$6,143 USD
View
Final sale: no returns
A
Retailer 10
-
£4,733 GBP
View
Retailer 11
-
£4,793 GBP
$6,422 USD
View
Price last confirmed 25 days ago
Retailer 12
-
£5,092 GBP
A$10,496 AUD
View
Price last confirmed 29 days ago
Retailer 13
-
£5,192 GBP
$6,957 USD
View
Price last confirmed 34 days ago
Retailer 14
-
£5,272 GBP
$7,064 USD
View
Price last confirmed 33 days ago
A
Retailer 15
-
£5,428 GBP
€6,927 EUR
View
Retailer 16
-
£5,991 GBP
$8,027 USD
View
Price last confirmed 33 days ago
B+
Retailer 17
-
£6,231 GBP
ZAR 134,885 ZAR
View
B+
Retailer 18
-
£7,357 GBP
View
Most Expensive
NZ Jewellers
6df0276c-c38a-45f7-9185-b9ea45a5031b · Sep 28
£8,684 GBP
$11,636 USD
View
Price last confirmed 35 days ago
18 more retailers have this diamond
Prices start from £3,544 GBPSave up to £3,813 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
£3,544 GBP