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Round|Natural|GIA

1.50ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6451465789

Certificate GIA 6451465789

Diamond specifications and retailer prices

From £6,015 GBP
$8,010 USD
As of October 25, 2026
Save £6,602 GBP (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £12,617 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

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 6451465789. Listed at 16 retailers as of October 25, 2026, with prices from £6,015 to £12,617, a £6,602 spread on the same certified stone. Diamond Quarter lists it at £12,617. 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 angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6451465789
Dimensions7.37 × 7.33 × 4.54 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
7.37 mm7.33 mm1.50 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6451465789
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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: Oct 25
Current: £7,109 GBP|Low: £5,457 GBP|High: £10,350 GBP|Avg: £7,464 GBP|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4£6,015 GBP
Retailer 8£6,066 GBP
Retailer 5£6,548 GBP
Retailer 6£7,094 GBP
Retailer 1£7,109 GBP
Retailer 2£8,173 GBP
Retailer 7£8,618 GBP
Retailer 3£10,282 GBP

43 data points across 8 retailers

16 retailers£6,015 GBP to £12,617 GBP

A
Cheapest Retailer
-
£6,015 GBP
$8,010 USD
A
Retailer 2
-
£6,131 GBP
$8,164 USD
View
B+
Retailer 3
-
£6,548 GBP
$8,720 USD
View
B+
Retailer 4
-
£6,548 GBP
$8,720 USD
View
Final sale: no returns
B+
Retailer 5
-
£7,094 GBP
$9,447 USD
View
B+
Retailer 6
-
£7,109 GBP
View
B+
Retailer 7
-
£7,203 GBP
$9,592 USD
View
B+
Retailer 8
-
£7,735 GBP
$10,300 USD
View
B+
Retailer 9
-
£7,735 GBP
$10,300 USD
View
B+
Retailer 10
-
£7,990 GBP
$10,640 USD
View
B+
Retailer 11
-
£8,173 GBP
€10,365 EUR
View
B+
Retailer 12
-
£8,185 GBP
$10,900 USD
View
Retailer 13
-
£8,618 GBP
$11,477 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
£10,282 GBP
View
B
Retailer 15
-
£10,913 GBP
$14,533 USD
View
Most Expensive
B
Diamond Quarter
1.5SI2D648989CAN · Oct 29
£12,617 GBP
View
15 more retailers have this diamond
Prices start from £6,015 GBPSave up to £6,602 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
£6,015 GBP