CaratHunter
Plans
Heart|Natural|GIA

1.00ct K SI1 Heart Natural Diamond

GD • K/SI1 • GIA 1523127933

Certificate GIA 1523127933

Diamond specifications and retailer prices

From £1,110 GBP
As of November 5, 2026
Save £2,115 GBP (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,225 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1523127933. Listed at 12 retailers as of November 5, 2026, with prices from £1,110 to £3,225, a £2,115 spread on the same certified stone. NZ Jewellers lists it at £3,225. 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

1.00
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1523127933
Dimensions6.03 × 7.09 × 4.21 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
6.03 mm7.09 mm1.00 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1523127933
Side View
Table 61.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 59.3%

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 5
Current: £3,225 GBP|Low: £1,110 GBP|High: £3,225 GBP|Avg: £1,570 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 6, 2026
Retailer 11£1,110 GBP
Retailer 10£1,113 GBP
Retailer 4£1,198 GBP
Retailer 8£1,198 GBP
Retailer 7£1,254 GBP
Retailer 12£1,319 GBP
Retailer 3£1,330 GBP
Retailer 9£1,382 GBP
Retailer 2£1,467 GBP
Retailer 5£1,614 GBP
Retailer 6£2,310 GBP
NZ Jewellers£3,225 GBP

44 data points across 12 retailers

12 retailers£1,110 GBP to £3,225 GBP

B+
Cheapest Retailer
-
£1,110 GBP
B+
Retailer 2
-
£1,113 GBP
View
Retailer 3
-
£1,198 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£1,198 GBP
View
B+
Retailer 5
-
£1,254 GBP
View
B
Retailer 6
-
£1,319 GBP
View
B
Retailer 7
-
£1,330 GBP
View
B
Retailer 8
-
£1,382 GBP
View
B
Retailer 9
-
£1,467 GBP
View
B
Retailer 10
-
£1,614 GBP
View
B
Retailer 11
-
£2,310 GBP
View
Most Expensive
C
NZ Jewellers
9292f13b-de0f-429e-beda-d1ad17638be7 · Nov 5
£3,225 GBP
$4,317 USD
View
11 more retailers have this diamond
Prices start from £1,110 GBPSave up to £2,115 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+
1.00ct Heart
£1,110 GBP