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Marquise|Natural|GIA

1.80ct M SI2 Marquise Natural Diamond

M/SI2 • GIA 1545868712

Certificate GIA 1545868712

Diamond specifications and retailer prices

From $5,152 USD
As of November 6, 2026
Save $381 USD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $5,533 USD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 1.8ct natural marquise diamond

This 1.8ct natural marquise sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included) and certified by GIA 1545868712. Listed at 2 retailers as of November 6, 2026, with a relatively tight 7% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.80
Carat
M
Color
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545868712
Dimensions12.26 × 6.22 × 3.84 mm
L/W Ratio1.97
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
12.26 mm6.22 mm1.80 ctM / SI2
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545868712
Side View
Table 56.0%CrownGirdle: MED-XTKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $5,152 USD|Low: $3,145 USD|High: $6,111 USD|Avg: $4,955 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
The Diamond Guys
October 15, 2026
Retailer 2$3,145 USD
Retailer 3$4,179 USD
Retailer 1$5,152 USD
The Diamond Guys$5,533 USD
Retailer 4$5,842 USD
Retailer 5$5,959 USD

78 data points across 6 retailers

2 retailers$5,152 USD to $5,533 USD

B
Cheapest Retailer
-
$5,152 USD
Most Expensive
C
The Diamond Guys
1992900036 · Nov 6
$5,533 USD
View
1 more retailer has this diamond
Prices start from $5,152 USDSave up to $381 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.

B
1.80ct Marquise
$5,152 USD