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Round|Natural|GIA

1.50ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6531123603

Certificate GIA 6531123603

Diamond specifications and retailer prices

From £4,556 GBP
HK$47,400 HKD
As of October 28, 2026
Save £3,908 GBP (46%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £10,019 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6531123603. Listed at 18 retailers as of October 28, 2026, with a 86% 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

1.50
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6531123603
Dimensions7.38 × 7.33 × 4.51 mm
L/W Ratio1.01
Top View
7.38 mm7.33 mm1.50 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531123603
Side View
Table 61.0%Crown 34°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.3%

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 28
Current: £4,784 GBP|Low: £4,784 GBP|High: £8,502 GBP|Avg: £6,254 GBP|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 1£4,784 GBP
Retailer 8£5,177 GBP
Retailer 6£5,376 GBP
Retailer 7£5,529 GBP
Retailer 9£5,530 GBP
Retailer 3£5,577 GBP
Retailer 2£6,535 GBP
Retailer 5£8,360 GBP
Retailer 4£8,464 GBP

35 data points across 9 retailers

18 retailers£4,556 GBP to £8,464 GBP

A
Cheapest Retailer
-
£4,556 GBP
HK$47,400 HKD
A
Retailer 2
-
£4,784 GBP
₹606,760 INR
View
A
Retailer 3
-
£5,177 GBP
$6,894 USD
View
Retailer 4
-
£5,239 GBP
SGD 9,428 SGD
View
Price last confirmed 18 days ago
A
Retailer 5
-
£5,376 GBP
SGD 9,674 SGD
View
A
Retailer 6
-
£5,529 GBP
$7,363 USD
View
Final sale: no returns
Retailer 7
-
£5,530 GBP
$7,364 USD
View
Price last confirmed 14 days ago
A
Retailer 8
-
£5,540 GBP
$7,377 USD
View
A
Retailer 9
-
£5,577 GBP
View
A
Retailer 10
-
£5,639 GBP
$7,510 USD
View
Retailer 11
-
£5,990 GBP
$7,977 USD
View
Price last confirmed 31 days ago
B+
Retailer 12
-
£6,116 GBP
$8,145 USD
View
B+
Retailer 13
-
£6,535 GBP
€8,288 EUR
View
Retailer 14
-
£6,912 GBP
$9,205 USD
View
Price last confirmed 32 days ago
B+
Retailer 15
-
£8,360 GBP
View
B+
Retailer 16
-
£8,464 GBP
View
Retailer 17
-
£10,019 GBP
$13,342 USD
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
e9b6a624-7fd9-431a-ab4f-c6e3550ed700 · Sep 28
£10,019 GBP
$13,342 USD
View
Price last confirmed 32 days ago
17 more retailers have this diamond
Prices start from £4,556 GBPSave up to £3,908 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
1.50ct Round
£4,556 GBP