Round|Natural|GIA

1.53ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1499026444

Certificate GIA 1499026444

Diamond specifications and retailer prices

From £6,493 GBP
As of November 1, 2026
Save £5,066 GBP (44%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £16,621 GBP at NZ Jewellers · As of September 1, 2026
View at NZ Jewellers

About this 1.53ct natural round diamond

This 1.53ct 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 1499026444. Listed at 18 retailers as of November 1, 2026, with a 78% 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

1.53
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1499026444
Dimensions7.33 × 7.36 × 4.56 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Girdle conditionFaceted
Top View
7.33 mm7.36 mm1.53 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1499026444
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £7,536 GBP|Low: £6,873 GBP|High: £10,961 GBP|Avg: £8,496 GBP|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 7£6,873 GBP
Retailer 1£7,536 GBP
Retailer 5£7,627 GBP
Retailer 6£7,629 GBP
Retailer 2£8,716 GBP
Retailer 4£10,188 GBP
Retailer 3£10,831 GBP

42 data points across 7 retailers

18 retailers£6,493 GBP to £11,559 GBP

B+
Cheapest Retailer
-
£6,493 GBP
B+
Retailer 2
-
£6,724 GBP
View
B+
Retailer 3
-
£6,873 GBP
View
Retailer 4
-
£6,935 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£7,513 GBP
View
B+
Retailer 6
-
£7,536 GBP
View
Retailer 7
-
£7,627 GBP
View
Price last confirmed 14 days ago
B+
Retailer 8
-
£7,629 GBP
View
B
Retailer 9
-
£7,995 GBP
View
B+
Retailer 10
-
£8,669 GBP
View
B+
Retailer 11
-
£8,699 GBP
View
B+
Retailer 12
-
£8,716 GBP
View
Retailer 13
-
£9,127 GBP
View
Price last confirmed 14 days ago
B
Retailer 14
-
£10,188 GBP
View
B
Retailer 15
-
£10,831 GBP
View
B
Retailer 16
-
£11,559 GBP
View
Retailer 17
-
£13,199 GBP
View
Price last confirmed 60 days ago
Most Expensive
NZ Jewellers
4d388928-3d01-4dd9-815b-ac10f785a0b4 · Sep 1
£16,621 GBP
$22,370 USD
View
Price last confirmed 66 days ago
17 more retailers have this diamond
Prices start from £6,493 GBPSave up to £5,066 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.

B+
1.53ct Round
£6,493 GBP