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Marquise|Natural|GIA

0.78ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1563722001

Certificate GIA 1563722001

Diamond specifications and retailer prices

From £1,174 GBP
SGD 2,126 SGD
As of October 29, 2026
Save £969 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,143 GBP at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 0.78ct natural marquise diamond

This 0.78ct natural marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1563722001. Listed at 13 retailers as of October 29, 2026, with prices from £1,174 to £2,143, a £969 spread on the same certified stone. Helzberg Diamonds lists it at £2,143. 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

0.78
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.87°
Pavilion angle38.32°
OriginNatural
Grading LabGIA
CertificateGIA 1563722001
Dimensions9.31 × 4.85 × 2.89 mm
L/W Ratio1.92
Culet sizeNone
Top View
9.31 mm4.85 mm0.78 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1563722001
Side View
Table 58.0%Crown 37.87°Girdle: MED-VTKPavilion 38.32°Culet: NoneDepth 59.7%

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: Oct 29
Current: £2,143 GBP|Low: £1,196 GBP|High: £2,143 GBP|Avg: £1,509 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 8£1,196 GBP
Retailer 7£1,197 GBP
Retailer 9£1,212 GBP
Retailer 10£1,231 GBP
Retailer 3£1,303 GBP
Retailer 2£1,340 GBP
Retailer 5£1,502 GBP
Retailer 12£1,584 GBP
Retailer 6£1,685 GBP
Retailer 11£1,824 GBP
Retailer 4£1,936 GBP
Helzberg Diamonds£2,143 GBP

4 data points across 12 retailers

13 retailers£1,174 GBP to £2,143 GBP

A
Cheapest Retailer
-
£1,174 GBP
SGD 2,126 SGD
A
Retailer 2
-
£1,196 GBP
$1,603 USD
View
A
Retailer 3
-
£1,197 GBP
$1,603 USD
View
A
Retailer 4
-
£1,212 GBP
$1,624 USD
View
A
Retailer 5
-
£1,231 GBP
$1,650 USD
View
A
Retailer 6
-
£1,303 GBP
SGD 2,360 SGD
View
A
Retailer 7
-
£1,340 GBP
View
A
Retailer 8
-
£1,502 GBP
$2,012 USD
View
B+
Retailer 9
-
£1,584 GBP
$2,122 USD
View
B+
Retailer 10
-
£1,685 GBP
€2,150 EUR
View
B+
Retailer 11
-
£1,824 GBP
$2,444 USD
View
B
Retailer 12
-
£1,936 GBP
$2,595 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMJNIIGGH · Oct 30
£2,143 GBP
$2,872 USD
View
12 more retailers have this diamond
Prices start from £1,174 GBPSave up to £969 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
0.78ct Marquise
£1,174 GBP