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Round|Natural|GIA

1.50ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 7546878538

Certificate GIA 7546878538

Diamond specifications and retailer prices

From £1,759 GBP
As of November 6, 2026
Save £2,415 GBP (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,175 GBP at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 7546878538. Listed at 17 retailers as of November 5, 2026, with prices from £1,759 to £4,175, a £2,415 spread on the same certified stone. NZ Jewellers lists it at £4,175. 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle37°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7546878538
Dimensions7.10 × 7.20 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Cloud, Pinpoint, Indented Natural
Top View
7.10 mm7.20 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7546878538
Side View
Table 58.0%Crown 37°Girdle: STK-THKPavilion 41°Culet: NoneDepth 64.3%

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: £4,175 GBP|Low: £1,759 GBP|High: £4,175 GBP|Avg: £2,752 GBP
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 14£1,759 GBP
Retailer 3£2,037 GBP
Retailer 13£2,080 GBP
Retailer 8£2,283 GBP
Retailer 4£2,396 GBP
Retailer 7£2,450 GBP
Retailer 6£2,568 GBP
Retailer 2£2,609 GBP
Retailer 5£2,765 GBP
Retailer 9£2,774 GBP
Retailer 11£2,788 GBP
Retailer 10£2,924 GBP
Retailer 12£3,997 GBP
NZ Jewellers£4,175 GBP

36 data points across 14 retailers

17 retailers£1,759 GBP to £4,175 GBP

A
Cheapest Retailer
-
£1,759 GBP
A
Retailer 2
-
£2,037 GBP
View
B+
Retailer 3
-
£2,080 GBP
View
B+
Retailer 4
-
£2,128 GBP
View
B+
Retailer 5
-
£2,283 GBP
View
Retailer 6
-
£2,396 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,450 GBP
View
Retailer 8
-
£2,488 GBP
View
Price last confirmed 38 days ago
B+
Retailer 9
-
£2,568 GBP
View
B+
Retailer 10
-
£2,609 GBP
View
B+
Retailer 11
-
£2,765 GBP
View
B+
Retailer 12
-
£2,774 GBP
View
B+
Retailer 13
-
£2,788 GBP
View
B+
Retailer 14
-
£2,924 GBP
View
B
Retailer 15
-
£3,387 GBP
View
B
Retailer 16
-
£3,997 GBP
View
Most Expensive
B
NZ Jewellers
42a7469c-6b90-48c4-a836-741e832470b3 · Nov 5
£4,175 GBP
$5,619 USD
View
16 more retailers have this diamond
Prices start from £1,759 GBPSave up to £2,415 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
£1,759 GBP