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Oval|Natural|GIA

1.45ct M SI1 Oval Natural Diamond

ID • M/SI1 • GIA 6542880639

Certificate GIA 6542880639

Diamond specifications and retailer prices

From £937 GBP
As of November 6, 2026
Save £2,135 GBP (70%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,216 GBP at NZ Jewellers · As of October 14, 2026
View at NZ Jewellers

About this 1.45ct natural oval diamond

This 1.45ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542880639. Listed at 15 retailers as of November 5, 2026, with a 228% 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

1.45
Carat
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542880639
Dimensions9.40 × 6.30 × 3.71 mm
L/W Ratio1.49
Top View
9.40 mm6.30 mm1.45 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542880639
Side View
Table 60.0%CrownGirdlePavilionCuletDepth 58.9%

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: £3,072 GBP|Low: £937 GBP|High: £3,503 GBP|Avg: £1,566 GBP|-12.3%
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
November 6, 2026
Retailer 13£937 GBP
Retailer 11£1,148 GBP
Retailer 2£1,238 GBP
Retailer 9£1,260 GBP
Retailer 5£1,275 GBP
Retailer 4£1,289 GBP
Retailer 10£1,311 GBP
Retailer 12£1,318 GBP
Retailer 6£1,361 GBP
Retailer 3£1,453 GBP
Retailer 8£1,537 GBP
Retailer 7£1,711 GBP
NZ Jewellers£3,072 GBP

35 data points across 13 retailers

15 retailers£937 GBP to £3,072 GBP

A
Cheapest Retailer
-
£937 GBP
A
Retailer 2
-
£1,148 GBP
View
A
Retailer 3
-
£1,238 GBP
View
A
Retailer 4
-
£1,260 GBP
View
B+
Retailer 5
-
£1,275 GBP
View
Retailer 6
-
£1,289 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£1,311 GBP
View
B+
Retailer 8
-
£1,318 GBP
View
A
Retailer 9
-
£1,361 GBP
View
A
Retailer 10
-
£1,453 GBP
View
B+
Retailer 11
-
£1,537 GBP
View
B+
Retailer 12
-
£1,711 GBP
View
Retailer 13
-
£1,725 GBP
View
Price last confirmed 70 days ago
B
Retailer 14
-
£3,072 GBP
View
Most Expensive
NZ Jewellers
cf286401-5e2d-4941-a238-4453e597320e · Oct 14
£3,216 GBP
$4,304 USD
View
Price last confirmed 23 days ago
14 more retailers have this diamond
Prices start from £937 GBPSave up to £2,135 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
1.45ct Oval
£937 GBP