Heart|Natural|HRD

1.78ct D SI1 Heart Natural Diamond

EX • D/SI1 • HRD 220000147811

Shape and cutting style on the report: Heart

Certificate HRD 220000147811

Diamond specifications and retailer prices

From £5,490 GBP
$7,356 USD
As of October 30, 2026
Save £5,134 GBP (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £10,624 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.78ct natural heart diamond

This 1.78ct natural heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 220000147811. Listed at 9 retailers as of October 30, 2026, with prices from £5,490 to £10,624, a £5,134 spread on the same certified stone. NZ Jewellers lists it at £10,624. 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

1.78
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabHRD
CertificateHRD 220000147811
Dimensions7.86 × 8.48 × 4.59 mm
L/W Ratio1.08
Girdle conditionFaceted
Top View
7.86 mm8.48 mm1.78 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateHRD 220000147811
Side View
Table 56.0%CrownGirdle: MediumPavilionCulet: NoneDepth 54.0%

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: Oct 30
Current: £10,624 GBP|Low: £5,490 GBP|High: £10,624 GBP|Avg: £6,730 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9£5,490 GBP
Retailer 7£5,863 GBP
Retailer 3£6,039 GBP
Retailer 2£6,352 GBP
Retailer 6£6,450 GBP
Retailer 8£6,489 GBP
Retailer 4£6,551 GBP
Retailer 5£7,329 GBP
NZ Jewellers£10,624 GBP

38 data points across 9 retailers

9 retailers£5,490 GBP to £10,624 GBP

B+
Cheapest Retailer
-
£5,490 GBP
$7,356 USD
B+
Retailer 2
-
£6,039 GBP
View
B+
Retailer 3
-
£6,352 GBP
$8,511 USD
View
Retailer 4
-
£6,450 GBP
$8,642 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
£6,489 GBP
$8,694 USD
View
B+
Retailer 6
-
£6,551 GBP
€8,360 EUR
View
B
Retailer 7
-
£6,725 GBP
€8,582 EUR
View
B+
Retailer 8
-
£7,329 GBP
$9,820 USD
View
Most Expensive
B
NZ Jewellers
12f6090b-8780-4678-97a8-692ff8a0a5b5 · Oct 30
£10,624 GBP
$14,235 USD
View
8 more retailers have this diamond
Prices start from £5,490 GBPSave up to £5,134 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+
1.78ct Heart
£5,490 GBP