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Round|Natural|GIA

1.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2546001458

Certificate GIA 2546001458

Diamond specifications and retailer prices

From £4,402 GBP
As of November 6, 2026
Save £3,764 GBP (46%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £10,166 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2546001458. Listed at 17 retailers as of November 4, 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2546001458
Dimensions7.26 × 7.19 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle, Natural
Top View
7.26 mm7.19 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2546001458
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.8%

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 6
Current: £4,402 GBP|Low: £4,402 GBP|High: £8,572 GBP|Avg: £6,067 GBP|-5.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 1£4,402 GBP
Retailer 2£4,686 GBP
Retailer 12£5,078 GBP
Retailer 5£5,416 GBP
Retailer 11£5,416 GBP
Retailer 9£5,773 GBP
Retailer 3£5,886 GBP
Retailer 10£5,998 GBP
Retailer 7£6,039 GBP
Retailer 4£6,171 GBP
Retailer 6£7,168 GBP
Retailer 8£8,166 GBP

28 data points across 12 retailers

17 retailers£4,402 GBP to £8,166 GBP

A
Cheapest Retailer
-
£4,402 GBP
A
Retailer 2
-
£4,531 GBP
View
A
Retailer 3
-
£4,563 GBP
View
A
Retailer 4
-
£4,686 GBP
View
Final sale: no returns
A
Retailer 5
-
£5,078 GBP
View
A
Retailer 6
-
£5,416 GBP
View
A
Retailer 7
-
£5,416 GBP
View
Retailer 8
-
£5,610 GBP
View
Price last confirmed 29 days ago
B+
Retailer 9
-
£5,773 GBP
View
Retailer 10
-
£5,886 GBP
View
Price last confirmed 33 days ago
B+
Retailer 11
-
£5,998 GBP
View
A
Retailer 12
-
£6,039 GBP
View
Retailer 13
-
£6,078 GBP
View
Price last confirmed 29 days ago
Retailer 14
-
£7,013 GBP
View
Price last confirmed 28 days ago
B+
Retailer 15
-
£7,168 GBP
View
B+
Retailer 16
-
£8,166 GBP
View
Most Expensive
NZ Jewellers
26fbc2e4-8b2e-4b7c-8a46-50303532d341 · Sep 28
£10,166 GBP
$13,682 USD
View
Price last confirmed 39 days ago
16 more retailers have this diamond
Prices start from £4,402 GBPSave up to £3,764 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
£4,402 GBP