Marquise|Natural|GIA

1.30ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551891799

Certificate GIA 6551891799

Diamond specifications and retailer prices

From $6,265 USD
As of November 1, 2026
Save $4,923 USD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $13,464 USD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.3ct natural marquise diamond

This 1.3ct natural marquise sits in the one-and-a-quarter to one-and-a-half 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 6551891799. Listed at 13 retailers as of November 1, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.30
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551891799
Dimensions10.88 × 5.73 × 3.66 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Top View
10.88 mm5.73 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551891799
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $8,278 USD|Low: $6,265 USD|High: $11,353 USD|Avg: $8,476 USD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$6,265 USD
Retailer 3$7,518 USD
Retailer 6$7,713 USD
Retailer 8$8,060 USD
Retailer 9$8,060 USD
Retailer 1$8,278 USD
Retailer 10$8,330 USD
Retailer 2$8,868 USD
Retailer 4$9,821 USD
Retailer 5$11,188 USD

32 data points across 10 retailers

13 retailers$6,265 USD to $11,188 USD

A
Cheapest Retailer
-
$6,265 USD
Retailer 2
-
$7,293 USD
View
Price last confirmed 45 days ago
B+
Retailer 3
-
$7,518 USD
View
Retailer 4
-
$7,713 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$8,060 USD
View
B+
Retailer 6
-
$8,060 USD
View
B+
Retailer 7
-
$8,278 USD
View
B+
Retailer 8
-
$8,330 USD
View
Retailer 9
-
$8,415 USD
View
Price last confirmed 43 days ago
Retailer 10
-
$8,868 USD
View
Price last confirmed 14 days ago
B+
Retailer 11
-
$9,821 USD
View
B
Retailer 12
-
$11,188 USD
View
Most Expensive
NZ Jewellers
c10a64fd-b190-4958-b15c-cc64b9bcd4a7 · Sep 25
$13,464 USD
View
Price last confirmed 41 days ago
12 more retailers have this diamond
Prices start from $6,265 USDSave up to $4,923 USD

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
1.30ct Marquise
$6,265 USD