Round|Natural|GIA

1.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1549181187

Certificate GIA 1549181187

Diamond specifications and retailer prices

From £5,178 GBP
HK$54,200 HKD
As of October 30, 2026
Save £4,431 GBP (46%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £11,470 GBP at NZ Jewellers · As of October 17, 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 1549181187. Listed at 23 retailers as of October 29, 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
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1549181187
Dimensions7.28 × 7.23 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Cavity, Needle, Pinpoint
Top View
7.28 mm7.23 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549181187
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.0%

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: £5,527 GBP|Low: £5,513 GBP|High: £9,673 GBP|Avg: £7,172 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 1£5,527 GBP
Retailer 11£5,860 GBP
Retailer 2£6,113 GBP
Retailer 4£6,301 GBP
Retailer 3£6,330 GBP
Retailer 9£6,462 GBP
Retailer 5£6,618 GBP
Retailer 6£7,514 GBP
Retailer 10£8,276 GBP
Retailer 8£9,151 GBP
Retailer 7£9,608 GBP

28 data points across 11 retailers

23 retailers£5,178 GBP to £9,608 GBP

A
Cheapest Retailer
-
£5,178 GBP
HK$54,200 HKD
A
Retailer 2
-
£5,527 GBP
₹705,336 INR
View
A
Retailer 3
-
£5,600 GBP
$7,503 USD
View
Retailer 4
-
£5,727 GBP
SGD 10,370 SGD
View
Price last confirmed 19 days ago
A
Retailer 5
-
£5,860 GBP
$7,852 USD
View
A
Retailer 6
-
£6,113 GBP
SGD 11,068 SGD
View
B+
Retailer 7
-
£6,298 GBP
$8,439 USD
View
B+
Retailer 8
-
£6,299 GBP
$8,440 USD
View
B+
Retailer 9
-
£6,301 GBP
View
Retailer 10
-
£6,330 GBP
$8,482 USD
View
Price last confirmed 15 days ago
B+
Retailer 11
-
£6,330 GBP
$8,482 USD
View
Final sale: no returns
B+
Retailer 12
-
£6,351 GBP
$8,510 USD
View
Retailer 13
-
£6,462 GBP
A$13,321 AUD
View
Price last confirmed 7 days ago
B+
Retailer 14
-
£6,618 GBP
View
Retailer 15
-
£6,858 GBP
$9,189 USD
View
Price last confirmed 13 days ago
Retailer 16
-
£6,963 GBP
$9,330 USD
View
Price last confirmed 15 days ago
B+
Retailer 17
-
£7,009 GBP
$9,392 USD
View
B+
Retailer 18
-
£7,514 GBP
€9,588 EUR
View
Retailer 19
-
£7,913 GBP
$10,602 USD
View
Price last confirmed 12 days ago
Retailer 20
-
£8,276 GBP
ZAR 179,145 ZAR
View
Price last confirmed 8 days ago
B
Retailer 21
-
£9,151 GBP
View
B
Retailer 22
-
£9,608 GBP
View
Most Expensive
NZ Jewellers
1e0e1df4-f9c0-4109-8f23-b540956e2e6e · Oct 17
£11,470 GBP
$15,368 USD
View
Price last confirmed 14 days ago
22 more retailers have this diamond
Prices start from £5,178 GBPSave up to £4,431 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
£5,178 GBP