Oval|Natural|GIA

1.50ct M SI1 Oval Natural Diamond

VG • M/SI1 • GIA 1559605877

Certificate GIA 1559605877

Diamond specifications and retailer prices

From £1,100 GBP
As of November 1, 2026
Save £380 GBP (26%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,622 GBP at NZ Jewellers · As of October 14, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1559605877. Listed at 10 retailers as of November 1, 2026, with a 35% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
M
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559605877
Dimensions9.53 × 5.91 × 3.90 mm
L/W Ratio1.61
Top View
9.53 mm5.91 mm1.50 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559605877
Side View
Table 60.0%CrownGirdle: MED-EXTPavilionCuletDepth 66.0%

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: £3,622 GBP|Low: £1,090 GBP|High: £3,622 GBP|Avg: £1,729 GBP|+9.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 7£1,100 GBP
Retailer 13£1,296 GBP
Retailer 5£1,342 GBP
Retailer 14£1,441 GBP
Retailer 2£1,479 GBP
Retailer 10£1,485 GBP
Retailer 12£1,485 GBP
Retailer 4£1,513 GBP
Retailer 9£1,553 GBP
Retailer 3£1,588 GBP
Retailer 8£1,713 GBP
Retailer 6£1,859 GBP
Retailer 11£2,020 GBP
NZ Jewellers£3,622 GBP

20 data points across 14 retailers

10 retailers£1,100 GBP to £1,479 GBP

B+
Cheapest Retailer
-
£1,100 GBP
B+
Retailer 2
-
£1,296 GBP
View
Retailer 3
-
£1,342 GBP
View
Price last confirmed 14 days ago
Retailer 4
-
£1,441 GBP
View
Price last confirmed 14 days ago
B+
Retailer 5
-
£1,479 GBP
View
Retailer 6
-
£1,485 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
£1,553 GBP
View
Price last confirmed 15 days ago
Retailer 8
-
£1,713 GBP
View
Price last confirmed 14 days ago
Retailer 9
-
£1,859 GBP
View
Price last confirmed 25 days ago
Most Expensive
NZ Jewellers
4085c270-154c-43d1-9f30-2bd20a195f94 · Oct 14
£3,622 GBP
$4,848 USD
View
Price last confirmed 23 days ago
9 more retailers have this diamond
Prices start from £1,100 GBPSave up to £380 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+
1.50ct Oval
£1,100 GBP