CaratHunter
Plans
Round|Natural|GIA

1.58ct M SI1 Round Natural Diamond

VG • M/SI1 • GIA 1478296138

Certificate GIA 1478296138

Diamond specifications and retailer prices

From £3,045 GBP
As of November 4, 2026
Save £3,401 GBP (53%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £6,445 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.58ct natural round diamond

This 1.58ct natural round 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 and certified by GIA 1478296138. Listed at 9 retailers as of November 4, 2026, with prices from £3,045 to £6,445, a £3,401 spread on the same certified stone. NZ Jewellers lists it at £6,445. 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

1.58
Carat
M
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1478296138
Dimensions7.28 × 7.26 × 4.67 mm
L/W Ratio1.00
Top View
7.28 mm7.26 mm1.58 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1478296138
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £6,445 GBP|Low: £2,687 GBP|High: £6,445 GBP|Avg: £3,877 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
November 5, 2026
Retailer 4£2,687 GBP
Retailer 7£3,045 GBP
Retailer 12£3,118 GBP
Retailer 6£3,295 GBP
Retailer 8£3,491 GBP
Retailer 9£3,491 GBP
Retailer 11£3,491 GBP
Retailer 10£4,028 GBP
Retailer 3£4,127 GBP
Retailer 5£4,327 GBP
Retailer 2£4,702 GBP
NZ Jewellers£6,445 GBP

26 data points across 12 retailers

9 retailers£3,045 GBP to £6,445 GBP

B
Cheapest Retailer
-
£3,045 GBP
B
Retailer 2
-
£3,295 GBP
View
B
Retailer 3
-
£3,491 GBP
View
Retailer 4
-
£3,491 GBP
View
Price last confirmed 8 days ago
B
Retailer 5
-
£3,491 GBP
View
B
Retailer 6
-
£4,028 GBP
View
B
Retailer 7
-
£4,327 GBP
View
B
Retailer 8
-
£4,702 GBP
View
Most Expensive
C
NZ Jewellers
34de757d-7c3a-4b3b-a904-7ad3c7ae5d67 · Nov 5
£6,445 GBP
$8,675 USD
View
8 more retailers have this diamond
Prices start from £3,045 GBPSave up to £3,401 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
1.58ct Round
£3,045 GBP